Search-light.



J. H. McPARTLAND.

SEARCH LIGHT.

APPLICATlON FILED JULY 15,1916.

Patented Jan. 2, 1917.

2 SHEETSSHEET I.

WITNESSES By ATTORNEY? J. H. McPARTLAND.

SEARCH LIGHT,

APPLICATION FILED JULY 15.1916.

1,21 1,204. Patented Jan. 2,1917.

2 SHEETSSHEET 2.

WITNESSES llVVE/VTOI? A TTOR/VEVS JAMES H. MQPARTLAND, or neutron,MAINE.

. SEARCH-LIGHT.

Specification of Letters Patent.

Patented Jan. 2, 1917.

Application filed July 15, 1916. Serial No. 109,498.

To all whom it may concern: 7

Be it known that I, JAMES H. MCPART- LAND, a citizen of the UnitedStates, and a resident of Houlton, in the county of Aroostook and Stateof Maine, have invented a new and Improved Search-Light, of which thefollowing is a full, clear, and exact descrlkiftion.

y invention relates more particularly to a search light adapted for useon a locomotive or on shipboard and mounted for directing the light atvarious angles to indicate the direction of travel; as well as toilluminate the track or course ahead of or behind the train or marinevessel.

The resent invention provides improved means or swinging the search'light throngh an angle to either side or forward or back, together withmeans for so mounting the light that it :may be inverted when not inuse, thereby protecting the light and reflector, the arrangementincluding a base orv support, as for instance, the roof of a 1060-motive cab, having an opening therethrough beneath the search light sothat when the' latter is inverted access tothe same may be had forcleaning,'etc.

Reference is to be had to the accompanying drawings forming a partofthis speci ficationfin which similar reference "characters indicatecorresponding parts in all'the views.

Figure 1 is a side elevation" showing diagrammatically, a locomotiveequipped with my improved search light; Fig. 2 is an enlarged plan view;Fig. 3 is a transverse vertical elevation on the line 33, Fig. 2; Fig. 4is a longitudinal vertical section on the line 4- -4, Fig.3. I

In carrying out my invention the search light body 10 is generally ofconcave-convex form and having any suitable source of light, hereindicated as an electric lamp 11,

- the conductor 12 of whichleads through hollow trunnion ashereinafterexplained.

In order to mountthe body 10 of the light for universal movement, thesame is equipped with a ring-like rim 13 having trunnions 14 atopposite, sides mounted to rock in suitable bearings in an outer ring 15supported on rockable bracket arms 16. The arms 16 have hollowtrunnions, 17, 18, supported in bearings 19 and standards 20 suitablysecured to the cab roof'A or other base or support on a locomotive, orthe deck of a marine vessel.

same or replacing the lamp low shaft with the throttle lever of the'shaft 29. The outer end of theshackle 43,

The trunnions, 17, 18, are at right angles to the trunnions 14 so thatthe body 10 may be capable of universal movement. To" swing-- the bodyin one direction, a horizontal shaft 21 extends through the trunnion 18and, 15 adapted to move therein while the trunnion 17 is adapted toturn. through an angle about the axis of the said shaft 21. A link 22connects the shaft 21 with a depending lug 23 on the-bottom of the body10. To move he shaft 21 longitudinally and thereby rock the body 10 onthe trunnions 14, one-arm of a bellcrank lever 24 has a fork 24 disposedbetween collars 25 on said shaft. The, bellcrank; lever 24 is mountedtorock as at 26011 a standard or bracket 27 on the-base A, and the otherarm of said lever is connected by a slot and pin connection with avertical shaft 28 which extends through a tubular shaft 29 having ahandle 30 for manually turning the low shaft 29 and meshes with a pinion82 on a horizontal shaft 33 turning in bearings 34 at the under side ofthe base A. A sprocket pinion 35 is fixed on the shaft 33 and a chain 36runs over said pinion and over a sprocket pinion 37 keyed on thetrunnion 18. Thus the engineer in the cab, or other operator, may turnthesh-aft 29 through the medium of the. handle 30. .In the invertedposition of the body of the search light, as indicated by dotted lines,Fig. 3, thelight will be disposedover an opening in the roof A or otherbase. Said opening is fitted with a frame 38 having grooves 39 inopposite sides to receive a-.-cover 40. By removing the cover access maybe had to the inverted light for cleaning the 'In. order to; turn thehandle 30 by the. throwing of the throttle lever, I provide means todetachably connect the said hollocomotive, for which. purpose -thethrottle lever 42 adjacent to the handle 41 thereof is engaged by aclamp or shackle 43, pivoted as at 44 on a collar 45'fixed on the hollowis formed with a fork 46 adapted to embrace the throttle lever andreceive a pin 47, When the shackle 43 is connected with the throttlelever, the throwing of the latter will turn the shaft 29 for rocking thetrunnion 18. On the other hand, the shackle 43 may be detached from thethrottle lever 42 by removing the pin 47 after which the hollow shaft 29may be turned by the handle 30.

In order to move the vertical shaft 28 longitudinally in the hollowshaft 29 whereby to move the horizontal shaft 21 longitudinally in thetrunnion 18, any suitable means may be provided. In the illustratedexample a forked bracket 48 is provided, the, upper arm of the forkforming a bearing 49 for the lower end of the hollow shaft 29. The otherarm of the fork forms a bearing 50 for the lower end of the'verticalshaft 28. Between the bearings 49, 50, is a worm wheel 51, meshing withwhich is a worm 52, the shaft of which has a crank arm 53 for turningsaid worm. The worm wheel 51 is threaded onto the threaded lower end ofthe shaft 28 so that the turning of the wheel at any desired angleaboard ship for illuminating the course or for signaling the directionof travel. The light is particularly use- .ful on locomotives insignaling the approach of crossings and the angle may be such as to showthe direction of movement, as Well as to indicate theparticular track onWhich the locomotive is traveling.

Having thus described my invention I claim,as new, and desire to secureby Letters Patent:

1. In a Searchlight, a support having a vertical opening therein, asearch light body mounted above said opening and having a source oflight, means mounting the said body foruniversal movement, and means toimpart turning movement to the body in one direction through an angle todispose the same in inverted position at the said opening.

2. In a search light, a body having a source of light, a support forsaid body, and means mounting the body to turn in planes at right anglesto each other, said means including trunnions on the body, a ring inwhich the said trunnions are mounted to rock, arms supporting the saidring, said arms having hollow trunnions disposed at right angles to thefirst trunnions, a shaft extending through one of the hollow trunnionsand connected with the body of the light, means to move said shaftlongitudinally, and means to rock the hollow trunnions about the axis ofthe shaft.

3. In a search light, a body having a source of light, means to rocksaid body in one plane, means to mount the light on a locomotive, meansto turn the light in a plane at right angles to the first plane, saidlast-mentioned means including an actuating member mounted to turn, andmeans carried by said actuating member to detachably connect the samewith the throttle lever of the locomotive.

4. In a search light, a support, a search light body having a source oflight, trunnions on said body, a ring in which said trunnions havebearings, arms mounting said ring, trunnions on said arms, one of saidlast-mentioned trunnions being hollow, horizontal bearings in which saidlast mentioned trunnions are mounted, a shaft extending through thehollow trunnion and connected with the search light body, a bellcranklever having one arm engaging said shaft, a vertical shaft connectedwith the other arm of the bellcrank, a hollow shaft in which the-

